Wall of Slime

Creates a 60 ft long, 10 ft high, 5 ft thick wall of goo. The wall is difficult terrain and lightly obscures vision. Any creature that moves through the wall takes 4d8 acid damage and must make a Strength saving throw or become restrained until the start of their next turn.

Using a Higher-Level Spell Slot. The damage the wall deals when it appears increases by 1d8 and the damage from passing through the sheet of frigid air increases by 1d6 for each spell slot level above 6.